Improvement in grinding-mills



UNITED STATES ADDISON H. NORDYKE AND DANIEL W. MARMON, OF RICHMOND, INDIANA.

IMPROVEMENT IN GRlNDlNG-MILLS.

`Specification forming part of Letters Patent No. 117,667, dated August 1, 187].

To all whom it may concern:

Be it known that we, ADDISON H. -NoRDYKE and DANIEL W. MARMON, both of Richmond, in the county of Wayne and State of Indiana, have invented a certain Improvement in Grinding- Mills; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawing making a part of this specification, in which- Figure l is an elevation of our improved stonebalancing apparatus, showing also'a portion of the running or revolving stone. Fig. 2 is a central vertical section on line r1: m of Fig. 3, showing the spindle, the cockeye, the iiXed and the swinging or oscillatingtubes, and the pivots upon whichthe oscillating one rests. Fig. 3 is a bottom view of the tubes and the sockets for the ends of the driver upon the spindle. Fig. Llis a a sectional elevation on line y y of Fig. 3.

Corresponding letters refer to corresponding parts in all the figures.

This invention relates to that class of devices which is used in the eyes of millstones for the purpose of hinging and balancing the revolving' one; and it consists in the construction, combination, and arrangement of its parts, as will be more fully explained hereinafter.

In constructing devices of this character we luse what we shall term an outer shell ortube, A,

which is conical in form throughout a portion of its length, and is secured in the eye of the revolving stone by means of plaster of Paris or other suitable material. Upon the upper end of this shell or tube (which will generally be of cast metal,) there is placed a cylindrical portion, A1, which is of sufficient length to extend from the upper end of the conical part A to the upper surface of the stone, as shown in Fig. l. This eX- tension may be cast in one piece with the conical portion, or it may be made in a separate piece and bolted thereto, but inl either case it is to be made to extend downward below the upper surface of the conical portion for the purpose of forming an unobstructed passage for the grain to the grinding-surfaces of the stones. This doWnwardly-projectin g flange also forms a bearing for the inner ends of the pivots, upon which the stone oscillates. Upon two portions of the surface of the conical portion of this case or tube there are formed projections for the reception of the pivots C G, and inside the cylindrical portion is cast, or otherwise permanently secured, the balance-bail A2, it being supplied with a cockeye, A, which rests upon the upper end or the cockhead of the spindle. Within the case or tube A there is placed another and smaller conical tube, B, the upper portion of which is provided with projections upon its outer surface through which the pivots or pins pass, as shown in Fig. 2, while upon or in its lower edge it has formed pockets B2 B2 for the reception of the cross-bar upon the spindle. The spindle D is constructed as shown in Fig. 2, it having upon its upper end a cockhead which enters the cockeye in the bail A3. The arms D' project from the vertical portion of the spindle D, and furnish the means by which motion is given to the revolving stone.

Some of the advantages due to this improveA ment may be stated as follows:` The case or tube A, being constructed as described, admits of its being firmly secured in the revolving stone, and forms an unobstructed passage for the grain through it, and, at the same time, furnishes the means for suspending the stone in such a mauner that it can oscillate in two directions upon the spindle, while its combination with the case or tube B provides the means for the requisite oscillation in the opposite directions, from the fact that the weight of the stone rests upon the spindle, and the pockets in the interior case are deep enough to permit such oscillation without coming in contact with the upper surface of the cross-arms of the spindle. The pivots C (l being placed in a plane parallel, or nearly so, with the base of the tube A, said plane passing through the point in the cockeye around which the stone would rotate, if it should rotate across the tubes it follows that, as power is applied to the spindle and through it to the case or shell B, the faces of the two stones will remain parallel to and at the same distance from each other, even though the plane which passes through the cockeye and that which passes through the spindle-arms be not parallel; or, in other words, if the spindle should stand in such a position that its cross-arms were not parallel with the face of the stone, the above described arrangement of parts would still permit the faces or grinding-surfaces of the stones to remain parallel throughout the entire revolution of the revolving stone. Another advantage is that the power is applied to the case or tube A in a plane parallel t-o its face, said plane at the same time passing through the oookeye, and henoe there is no tendency to tip the stone, as is the ease Where there is not a double adjustment Whenever the spindle gets out of tram with the face ofthe bed-stone. Should the spindle spring or tremble in running, this arrangement will al- 10W the running stone to adjust itself to the bedstone in suoh a manner as not to be affected thereby.

What We Claim as our invention, and desire to seoure by Letters Patent, is-

l. The combination of a oase or tube having in it a fixed receptacle for the upper end of the spindle, and the oscillating or swinging tube or oase B,'substantiallyasn and'forthe purpose set forth.

2. The downwardly-projecting flange upon the cylindrical portion of the oase or tube A,in oombination With the swinging tube B, substantially as shown.

3. The tube B, when provided With the projections B1 Bl and the pockets B2 B2, for the purpose set forth.

4. The combination of the ease or tubes A and B and the cross-arms D of the spindle, the parts being constructed and arranged substantially as and for the purpose specified.

In testimony of which invention We hereunto set our hands.

ADDISON H. NORDYKE.

Y Y n IEL MABMON.

Witnesses:

JAMES SPEER, CHARLES A. NORDYKE. 

